Projects
Every project ships with a parts list in ₹, an accurate wiring diagram, and code compiled against the exact core version shown on its badge.
Student projects
ECG trace on an OLED for learning (Arduino Uno + AD8232) — not medical
See the P-QRS-T wave of a real heartbeat — the biology textbook diagram, live.
2 h · Student projects
18650 battery capacity tester with discharge graph and SD log (ESP32-S3)
Is that “3000 mAh” cell really 3000? Discharge it, watch the curve, keep the log.
3 h · Student projects
Bluetooth scrolling notice board for classrooms (ESP32 + 4-in-1 MAX7219 matrix)
Send a line from your phone — it scrolls across the LED board.
1.5 h · Student projects
Classroom noise meter with a traffic-light LED bar (Arduino Uno + KY-038)
A green-yellow-red bar that shows how loud the class is — and reminds when it’s too loud.
1 h · Student projects
Classroom voting machine for class elections — an EVM model (Arduino Uno + 16x2 LCD)
One BALLOT press, one vote, one long beep — a class-election model of an EVM.
2 h · Student projects
Colour sorting machine with two servos (Arduino Uno + TCS34725)
Drop coloured beads in the tube — the machine sorts them into bins by itself.
4 h · Student projects
Contactless infrared thermometer (Arduino Uno + MLX90614 + OLED)
Point it at anything and read its surface temperature.
1 h · Student projects
Bicycle speedometer and trip meter with a Nokia 5110 LCD (ESP32-C3 SuperMini)
A home-made bike computer — speed, trip, max and average on a classic Nokia screen.
2 h · Student projects
Debate and elocution competition timer with warning lights (Arduino Uno)
Green, yellow, red and a bell — speakers see their time without anyone waving a card.
2 h · Student projects
Digital compass with a needle on an OLED (Arduino Uno + GY-271)
A needle that always points north — and the maths that makes it work.
1.5 h · Student projects
Digital dice on an 8×8 LED matrix (Arduino Uno + MAX7219)
Press the button — the dice tumbles and lands on 1 to 6.
45 min · Student projects
Exam countdown clock on a 2.8" TFT — days, hours and a progress bar (Pico 2 W)
87 days, 14:22:05 — a big, honest number on your study desk, synced to the internet.
1 h · Student projects
Fire-fighting robot model that finds and puts out a candle (Arduino Uno + flame sensors)
Seeks a candle flame, drives up to it and sprays until it’s out.
5 h · Student projects
Touch-free recipe page turner with an APDS9960 gesture sensor (XIAO ESP32S3)
Wave left, right, up or down to scroll or pause a recipe without touching the screen.
1 h · Student projects
GPS tracker that texts its location (Arduino Uno + NEO-6M + SIM800L)
Texts a Google Maps link with its location to your phone.
3 h · Student projects
Digital tachometer with a Hall sensor and magnet (Arduino Uno + A3144 + TM1637)
A magnet, a Hall sensor and an interrupt — RPM of any rotating thing on a 4-digit display.
1.5 h · Student projects
Heart-rate and SpO2 display with MAX30102 (ESP32 + OLED)
Pulse and an SpO2 estimate from your fingertip on an OLED.
1.5 h · Student projects
Contact-free height measuring station for a school health camp (ESP32-C3 + VL53L1X)
Stand under it, hear the beep, read your height — no tape, no ruler, no touching.
1.5 h · Student projects
Inverse-square law of light experiment (Arduino Uno + BH1750 + VL53L0X)
Move a light sensor away from a lamp and watch the brightness fall as 1/d².
2 h · Student projects
Keypad door lock with a servo latch (Arduino Uno)
Type the PIN to open the latch — three wrong tries lock it out.
1.5 h · Student projects
Snake game on an 8×8 LED matrix with a joystick (Arduino Uno + MAX7219)
The old Nokia snake on 64 LEDs — steer it with a joystick.
1.5 h · Student projects
Class library book tracker with 125 kHz RFID tags and a web list (Pico 2 W + RDM6300)
Who has “Panchatantra” and for how long? The class library answers itself.
3 h · Student projects
Mango ripeness checker with a TCS34725 colour sensor (ESP32-C3 SuperMini)
Turn skin colour into a number — sort raw, turning and ripe mangoes the same way every time.
1.5 h · Student projects
Morse code trainer that decodes your keying (Arduino Uno + OLED)
Tap dots and dashes — the screen reads them back and scores you.
1 h · Student projects
Classroom seismograph with a scrolling OLED trace (Arduino Uno + MPU6050)
Thump the table and watch the shaking scroll across the screen like a real seismogram.
1.5 h · Student projects
Newton’s law of cooling experiment with a live graph (Pico W + 2 DS18B20 probes)
Hot water cools on a live phone graph — and the Pico W fits Newton’s law for you.
1.5 h · Student projects
NFC tag shortcuts for your PC — tap a tag to open an app or page (LOLIN S2 Mini)
Tap the sticker on your notebook and its timetable opens — your own tags, your own shortcuts.
1.5 h · Student projects
Read-only OBD-II car dashboard — RPM, speed, coolant and battery (Nano ESP32 + MCP2515)
A small extra gauge for your own car — coolant temperature and battery voltage at a glance.
4 h · Student projects
Garage parking assistant with a ToF sensor and LED bar (Arduino Uno)
An LED bar that goes green → yellow → red as you park.
1 h · Student projects
Measure g with a simple pendulum and an IR photogate (Arduino Uno)
An IR gate times every swing — the LCD shows the period and g live.
2 h · Student projects
Two-gate photogate timer for speed and acceleration (Arduino Uno + IR sensors)
Two IR gates time a run to the microsecond — speed and acceleration on an LCD.
2 h · Student projects
Plant-growth time-lapse camera that saves to microSD (XIAO ESP32S3 Sense)
A thumb-sized camera that photographs your seedlings every 5 minutes for days.
1 h · Student projects
Heart-rate display with a live pulse wave (Arduino Uno + Pulse Sensor + OLED)
See your own pulse as a wave on a tiny screen — and hear every heartbeat.
1 h · Student projects
Quiz buzzer system for 4 teams with lockout (Arduino Uno + TM1637 + WS2812B)
Four teams, one winner — the first press lights its colour and locks out the rest.
2 h · Student projects
Automatic railway level-crossing gate model (Arduino Uno + IR sensors + servo)
Trains from either side close the boom; it opens only after the last coach has gone.
3 h · Student projects
Reaction timer game with a 4-digit display (Arduino Uno + TM1637)
Wait for GO, hit the button — how fast are you?
45 min · Student projects
RFID attendance system with OLED (ESP32 + RC522)
Tap-in/tap-out attendance with names on an OLED and a CSV log.
2 h · Student projects
Digital clock that keeps time through power cuts (Arduino Uno + DS3231)
A clock that keeps exact time even through power cuts.
45 min · Student projects
Sargam piano with 8 keys and a buzzer (Arduino Uno + TM1637)
Eight buttons, one buzzer — play Sa Re Ga Ma and see the physics of each note.
1.5 h · Student projects
Seed germination experiment logger with SD card (ESP32 + DS3231 + DHT22 + soil sensor)
Logs soil, light, temperature and humidity to SD every 10 minutes — graph your experiment.
3 h · Student projects
Simon memory game with colours and tones (Arduino Uno + WS2812B + passive buzzer)
Watch, listen, repeat — one more colour every round.
1.5 h · Student projects
Smart blind stick with ultrasonic obstacle alert (Arduino Nano)
Beeps faster as obstacles get closer.
1 h · Student projects
Touch-free smart dustbin (Arduino Uno + HC-SR04 + servo)
Wave your hand and the lid opens — closes by itself after 3 seconds.
1.5 h · Student projects
Measure the speed of sound with an ultrasonic sensor (Arduino Uno + HC-SR04)
Echo timing at known distances gives the speed of sound — with a line fit and theory check.
2 h · Student projects
Four-way traffic junction model with countdown and pedestrian button (Arduino Uno)
Four signal heads, a countdown and a pedestrian button — a real junction cycle in miniature.
3 h · Student projects
Automatic wet and dry waste segregator model (Arduino Uno + moisture plate + servo)
Drop waste on the flap — it tips into the wet or dry bin by itself and keeps count.
4 h · Student projects
India utility
Carbon monoxide alarm for angithi and sigri heaters (Arduino Nano + MQ-7)
Warns when carbon monoxide builds up from a charcoal heater in a closed room.
1.5 h · India utility
Automatic street / gate light with LDR (ESP32)
Dusk-to-dawn lamp control with an LDR, hysteresis and a steady-state delay.
1.5 h · India utility
School canteen prepaid NFC card system — tap, pick an item, pay (Nano ESP32 + PN532)
No change, no queue arguments — tap the card, press the samosa button, done.
3 h · India utility
E-paper door sign for a clinic or office — IN / WAIT / OUT at a button press (ESP32-C6)
One press tells the waiting room whether the doctor is in — and it stays readable through power cuts.
1.5 h · India utility
Cold storage / fridge temperature alert to your phone (ESP32 + DS18B20)
Phone alert when the fridge or chiller stays too warm for 10 minutes.
1 h · India utility
E-paper shop rate board you update from your phone (XIAO ESP32S3)
Change today’s rates from your phone; the e-paper keeps showing them with no power.
1.5 h · India utility
Fire and smoke alarm with heat-rise detection (Arduino Uno + MQ-2 + DS18B20)
Smoke, high heat or a fast temperature rise — any one sets off the alarm.
1.5 h · India utility
LPG gas leak alarm with SMS alert (Arduino Uno + MQ-6)
MQ-6 sensor, loud buzzer and an SMS to your phone when LPG builds up.
2 h · India utility
Grain storage humidity logger with phone alerts (XIAO ESP32C3 + SHT40, battery)
Know when the rice or wheat drum is getting damp — months on one Li-ion cell.
1.5 h · India utility
GSM farm motor control by SMS (Arduino Uno + SIM800L)
SMS "MOTOR ON" from your phone; the farm motor starts through a contactor and stops itself after 2 hours.
4 h · India utility
Inverter battery monitor with backup-time estimate (ESP32 + INA219)
Charge %, backup minutes left and a low-battery beep for your home inverter.
1.5 h · India utility
Irrigation pump timer with RTC (ESP32 + DS3231)
Pump runs at 6 am and 6 pm every day — the DS3231 keeps time through power cuts.
2 h · India utility
LPG cylinder gas-left monitor with refill alert (NodeMCU + HX711)
Shows kg of gas left in the cylinder and pings your phone when it’s time to book.
3 h · India utility
Mains voltage monitor with low/high alerts (ESP32 + ZMPT101B)
Live 230 V supply reading on an OLED with LOW/HIGH warnings for your appliances.
2 h · India utility
Milk collection weighing scale with price display (Arduino Uno + HX711)
Weighs milk to the gram and shows the ₹ amount to pay on a 16x2 LCD.
2.5 h · India utility
Poultry brooder temperature controller for chicks (ESP32 + DS18B20)
Holds the brooder at 33 °C for day-old chicks and steps down 3 °C every week.
2.5 h · India utility
Power-cut alert to your phone — no mains wiring (Pico W)
A battery-backed Pico W notices when its USB charger dies — beep plus phone alert.
1 h · India utility
Pressure cooker whistle counter with alarm (Arduino Nano + sound sensor)
Counts the cooker’s whistles and beeps when the dal is done — no more “was that 2 or 3?”
1 h · India utility
Pump dry-run cut-off with a water flow sensor (NodeMCU ESP8266)
No water in the pipe within 45 s? The pump stops and waits 30 minutes.
3 h · India utility
Home energy meter with electricity-bill estimate (ESP32 + PZEM-004T)
Watts, units and a running ₹ bill estimate from a PZEM-004T on your main line.
2.5 h · India utility
Radar alarm for a cattle shed or godown with a 433 MHz HC-12 link (XIAO ESP32C3)
Movement in the shed at night? The buzzer by your bed knows — no Wi-Fi or SIM needed.
3 h · India utility
Office or college ID-card attendance to Google Sheets (ESP32 + RDM6300)
Tap the 125 kHz ID card you already have; IN/OUT lands in a Google Sheet.
2.5 h · India utility
Automatic school bell timer with RTC and LCD (Arduino Uno + DS3231)
Rings every period on time, skips Sundays, and keeps time through power cuts.
2 h · India utility
Shop customer counter with door chime (Arduino Nano + HC-SR04)
Chimes when someone walks in and counts the day’s customers on a 4-digit display.
1.5 h · India utility
Shop shutter burglar alarm with SMS and call (Arduino Uno + SIM800L)
Shutter forced or motion inside at night → siren, SMS and a ringing phone.
3 h · India utility
Queue token number display for a clinic or shop (Arduino Uno + TM1637)
Press NEXT and the “now serving” number blinks and beeps — survives power cuts.
1 h · India utility
Smart pump controller with tank-full cut-off (ESP32)
Start the pump from your phone; a float switch stops it the moment the tank is full.
2 h · India utility
Soil NPK, pH and moisture logger with an RS-485 7-in-1 sensor (Pico 2 W)
Watch N, P, K, pH and moisture in your field or kitchen garden over weeks — not a single guess.
3 h · India utility
Solar panel voltage, current and energy monitor (ESP32 + INA219)
Volts, amps, watts and watt-hours from a small solar panel on an OLED.
1.5 h · India utility
Tally shortcut keypad — a 6-key USB keyboard for billing (ESP32-S3)
One press for Sales, Purchase, Receipt or Save — a billing keypad any PC sees as a keyboard.
1.5 h · India utility
Overhead tank overflow alarm (Arduino Uno + float switch)
A float switch near the top of the tank and a buzzer — no more water on the terrace.
1 h · India utility
Three-phase failure and single-phasing protector for farm motors (Arduino Nano)
Drops the starter when a phase goes missing or low — before the motor burns.
4 h · India utility
Water tank level alarm with pump cut-off (ESP32)
Know when your tank is full or empty — and cut the pump automatically.
2 h · India utility
Household water usage meter in litres (NodeMCU + flow sensor)
Litres per day from your overhead tank, plus a “tap left open?” warning.
2 h · India utility
Home automation
Aquarium heater and light controller with alarms (ESP32 + DS18B20)
Steady 26 °C water, a timed light with a midday break, and a too-hot/too-cold beep.
3 h · Home automation
Help button for elderly parents that alerts the whole family (Pico W)
One press sends an urgent alert to every family member’s phone — with a 5 s cancel.
1 h · Home automation
ESP32-CAM doorbell that sends a photo to your phone
Press the bell — get a photo of who’s at the door on your phone.
1.5 h · Home automation
Geyser auto-off timer with countdown display (ESP32 + contactor)
One press = 15 minutes of heating, then the geyser switches itself off.
2.5 h · Home automation
Hydroponic A/B nutrient doser with two peristaltic pumps (LOLIN S2 Mini + TB6612FNG)
Daily A and B nutrient doses for an NFT or DWC tank — measured in millilitres, never mixed.
2.5 h · Home automation
Control a lamp with any TV remote (Arduino Uno)
Use any spare TV remote to switch a lamp on and off.
1 h · Home automation
Medicine reminder with a “taken” button (Arduino Uno + DS3231 + LCD)
Beeps at dose time until the “taken” button is pressed; shows what was missed.
1.5 h · Home automation
Read a DIN-rail energy meter over Modbus RS-485 and show it on Wi-Fi (ESP32-C6)
Your meter already measures everything — this reads it over RS-485 and puts it on your phone.
2 h (plus the electrician’s meter installation) · Home automation
Motion-activated light with a PIR sensor (ESP32)
Lights on when someone walks in, off a minute after they leave.
1 h · Home automation
MQTT temperature and humidity node (ESP32 + DHT22)
Temperature and humidity to Home Assistant or Node-RED over MQTT.
1 h · Home automation
Wi-Fi NTP clock on a 16×2 I2C LCD (ESP32)
Accurate IST time from the internet on a 16×2 I2C display.
45 min · Home automation
Parcel box delivery alert on a battery (ESP32-C3 SuperMini + reed switch)
The lid opens, your phone pings — battery-powered, sleeps the rest of the time.
2 h · Home automation
Automatic plant watering system (ESP32)
Waters your plants in short bursts when the soil gets dry.
1 h · Home automation
RGB mood lamp with WS2812B LEDs and a rotary knob (Arduino Uno)
Turn the knob for colour, press it for breathe and rainbow modes.
1 h · Home automation
Room climate monitor with BME280 and OLED (ESP32-C3 SuperMini)
Temperature, humidity, pressure and dew point at a glance.
45 min · Home automation
Soil moisture monitor with phone alert (Pico W, MicroPython)
Capacitive sensor, low-power sleep and a phone ping when plants need water.
1 h · Home automation
Solar water heater display — how many buckets of hot water? (Arduino Uno + DS18B20)
Tank temperature and “~6 buckets at 40 °C” on an LCD inside the house.
2 h · Home automation
Motion-sensing staircase step lights that sweep up and down (Arduino Nano + WS2812B)
Steps light up one by one in the direction you walk — only after dark.
4 h · Home automation
Light-sensing curtain opener with a stepper motor (ESP32)
Opens the curtain at sunrise and closes it at dusk.
3 h · Home automation
Sunrise wake-up light with internet time (ESP32-C3 SuperMini + WS2812B)
A 30-minute artificial sunrise before your alarm, timed from the internet.
1.5 h · Home automation
Touch switch panel for two lamps with a phone page (ESP32 + TTP223)
Two touch pads behind acrylic switch two lamps — and so does your phone.
3 h · Home automation
Walk-away PC lock with a VL53L1X distance sensor (ESP32-S3 USB keyboard)
Get up, walk away — your office PC locks itself before anyone can peek.
1 h · Home automation
“Washing done” phone alert from vibration (ESP32-C3 SuperMini + MPU-6050)
Feels the machine shake and pings your phone when the cycle has really ended.
1 h · Home automation
Water leak detector with phone alert (Pico W, MicroPython)
Buzzer plus a phone alert when water reaches the floor under the RO or washing machine.
1 h · Home automation
Wi-Fi relay switch for a lamp (NodeMCU ESP8266)
Turn a lamp on and off from a web page on your phone.
1 h · Home automation
Robotics
Bluetooth RC car controlled from your phone (Arduino Uno + HC-05)
Drive a robot car from your phone over Bluetooth.
3 h · Robotics
Coil winding machine with an exact turn counter (Nano ESP32 + A4988 + NEMA 17)
Wind 250 turns without counting a single one — the stepper counts for you.
3 h · Robotics
Dual-axis solar tracker with four LDRs and two servos (Arduino Uno)
A small panel that follows the sun across the sky on two servos.
3 h · Robotics
Joystick-controlled robot arm with three servos (Arduino Uno)
A thumb joystick turns the base, lifts the arm and works the gripper.
2 h · Robotics
Line follower robot with two IR sensors (Arduino Uno)
Two IR sensors keep it on a black line.
3 h · Robotics
Mini sumo robot for college robo-fests (Arduino Uno + HC-SR04)
Finds the opponent, charges, and never drives out of the ring.
4 h · Robotics
Obstacle-avoiding robot with a scanning ultrasonic sensor (Arduino Uno)
Looks left and right, then turns towards the clearer path.
3 h · Robotics
360° product photo turntable with exact PIO stepping (Pico 2 W + A4988)
Sell on Meesho, Amazon or Instagram? Get even, repeatable 360° product shots at home.
4 h · Robotics
Two-wheel self-balancing robot with live PID tuning (ESP32 + MPU6050)
An inverted pendulum on two wheels — tune its PID live from the Serial Monitor.
5 h · Robotics
Teach-and-repeat robot arm that remembers 40 poses (Arduino Uno)
Show the arm a pick-and-place routine once, and it repeats it for ever.
4 h · Robotics
Tilt-controlled servo with an MPU-6050 (Arduino Uno)
Tilt the sensor and the servo follows your hand.
45 min · Robotics
Ultrasonic radar scanner with an OLED radar screen (Arduino Uno)
A sweeping sonar that draws what it sees on a little radar screen.
1.5 h · Robotics
Wall-following maze robot with three ultrasonic sensors (Arduino Nano)
Keeps a hand on the left wall — and that’s enough to get out of most mazes.
5 h · Robotics
Wi-Fi robot car driven from any phone browser (NodeMCU + L298N)
Drive it from a phone browser over its own Wi-Fi — no app to install.
2.5 h · Robotics
Network & ISP tools
Broadband speed logger — prove the evening slowdowns (ESP32-S3)
A speed test every 30 minutes, day and night, with the result on a 4-digit display.
45 min · Network & ISP tools
Read-only CAN bus sniffer for your car’s OBD-II port (Nano + MCP2515)
Watch a car’s CAN messages without ever sending one — listen-only, read-only.
2 h · Network & ISP tools
CCTV camera watchdog — beep when a camera or DVR drops off (ESP32-C3)
Know the moment a shop camera or the DVR stops answering — not days later.
45 min · Network & ISP tools
Fibre ONT status monitor — fibre cut or ISP fault? (ESP32 + LDRs)
Reads the ONT’s PON and LOS lights optically and names the fault for you.
1.5 h · Network & ISP tools
HC-12 433 MHz link range tester for farm and building links (Nano)
Walk the field with it and see exactly where your 433 MHz link stays reliable.
2 h · Network & ISP tools
HC-12 USB radio modem — a wireless Serial Monitor for your projects (LOLIN S2 Mini)
Your Serial Monitor, without the cable — for robots, rooftop sensors and the far end of the farm.
1 h · Network & ISP tools
ISP link monitor — router and internet latency on an OLED (ESP32)
Router, 1.1.1.1 and 8.8.8.8 latency and uptime on a tiny OLED.
45 min · Network & ISP tools
ISP outage logger with a phone-readable report (Pico W)
Every outage with start, end and minutes — on a web page your phone can open.
45 min · Network & ISP tools
Internet latency display on a 4-digit LED (NodeMCU ESP8266 + TM1637)
Your internet latency in milliseconds on a bright 4-digit display.
30 min · Network & ISP tools
Temperature-controlled cooling fan for a router or ONT cabinet (XIAO ESP32C3)
Keeps the router cabinet cool in May — quiet when it’s cool, full speed when it’s hot.
1.5 h · Network & ISP tools
Automatic router reboot when the internet hangs (ESP32 + relay)
Power-cycles a hung router automatically — through its 12 V DC lead, no mains wiring.
1 h · Network & ISP tools
RS485 Modbus sensor reader for long cable runs (Arduino Uno + MAX485)
Talk to industrial Modbus sensors over hundreds of metres of twisted pair.
1.5 h · Network & ISP tools
Backup battery power-cut alarm with SMS (Arduino Uno + INA219 + SIM800L)
SMS when your POP’s 12 V backup battery starts discharging or runs low.
2.5 h · Network & ISP tools
Uptime status board — 8 services on WS2812B LEDs (ESP32)
Eight colour LEDs show at a glance which services are up, slow or down.
1.5 h · Network & ISP tools
2.4 GHz Wi-Fi channel analyzer for crowded flats (ESP32 + ST7735)
See which 2.4 GHz channels your neighbours crowd, and pick the quietest for your router.
45 min · Network & ISP tools
Wi-Fi coverage mapper — find the dead zones room by room (ESP32-S3)
Press a button in every room and get a ranked list of your Wi-Fi dead zones.
45 min · Network & ISP tools
Wi-Fi signal strength logger with live graph (ESP32-C3 SuperMini + OLED)
A pocket RSSI meter with a live graph — find dead spots before you buy an extender.
45 min · Network & ISP tools
Weather
CO2 monitor for classrooms and AC bedrooms (ESP32-S3 + SCD40)
Real CO2 in ppm with a one-hour graph — and a beep when the room needs air.
1 h · Weather
Winter fog risk indicator from the dew point (NodeMCU + SHT31)
Temperature, dew point and a flashing FOG warning before the early drive or school run.
1 h · Weather
Heat stress meter for kitchens and workshops (Arduino Nano + DHT22)
The “feels like” temperature for a hot kitchen or shop floor, with a beep in the danger zone.
1 h · Weather
Kitchen air quality light bar for tadka smoke and agarbatti (SGP30)
An LED bar that turns red when tadka smoke, agarbatti or cleaner fumes build up.
1.5 h · Weather
Long-range LoRa weather node for farms (ESP32 + SX1278 + BME280)
Field weather readings sent kilometres over LoRa — no Wi-Fi, no SIM card.
3 h · Weather
Mini indoor weather display with comfort label (ESP32 + ST7735 + AHT20)
Room temperature, humidity, a comfort label and a trend line on a colour TFT.
1.5 h · Weather
MQTT weather station for Home Assistant (ESP32 + BME280)
BME280 readings as JSON over MQTT, ready for Home Assistant or Node-RED.
1.5 h · Weather
Rain alarm for drying clothes and grain (Arduino Uno + rain sensor)
Three loud beeps the moment the first drops hit the sensor.
45 min · Weather
Three-day rain forecast display for farm and terrace (ESP32 + ST7735)
Tomorrow’s rain chance and millimetres for your own village, on a colour screen.
1 h · Weather
Spray window anemometer for pesticide spraying (Pico W + cup anemometer)
Green means spray, red means the wind will carry it away — read at a glance in the field.
2 h · Weather
Cyclone and storm pressure alert from a barometer (Arduino Uno + BMP180)
A barometer that watches the pressure trend and beeps before a storm arrives.
1 h · Weather
Sunshine hours logger before you install solar (ESP32-C3 + BH1750)
Hours of bright sun and a rough daily solar energy figure for any spot.
1 h · Weather
Wi-Fi rain gauge with IMD rain-day totals (ESP32 + tipping bucket)
Millimetres of rain since 08:30 IST, the last hour’s rate and IMD’s category on an OLED.
2 h · Weather
Zigbee balcony temperature and humidity sensor that extends your mesh (ESP32-C6)
Outdoor temperature and humidity in Home Assistant over Zigbee — and a stronger mesh for free.
1.5 h · Weather