John keeps busy and exercises his brain and hands by making microcontroller devices. For inquiries and comments: saunj227@iCloud.com. Please no ads.
He usually makes a nice oak cabinet for them. | |
| This is a window fan which switches on when it gets cooler outside | |
| This is a battery charger for NiMh and gel-cell batteries | |
| This uses a very old parallel keyboard with a new life with PICAXE projects. | |
| This is both an altimeter and a barometer depending on the code. | |
| This is a Alpha-Numeric LED display demonstrating keyboard control and real-time clock. | |
| This is used for measuring rechargable batteries. | This is the wooden Art-Deco cabinet of a 1941 GE model LCP-609 AM tube radio, with entirely modern electronics inside. |
| This displays serial digital inputs on an analog meter. | |
| A 10 cps mechanical counter with a choice of voltage or contact-closure input. | |
| A PICAXE refurbishes a 40-year old autoranging Volt-Ohmmeter. | |
| Automatic switches to save standby power. | |
| Several devices using simple AM TX/RX modules for control | |
| Several devices using simple AM TX/RX modules for data communications | |
| A display using 600 mostly green LEDs in a 12 x 50 matrix. | |
| A Battery Charger for 12-volt Gel Cells. | |
| A constant-current regulator for driving high-power LEDs illuminating curios only during evening hours | |
| A device to quickly sort transistors according to polarity, pinout, and chemistry | |
| A replacement Spa Thermostat using a 14M2 | |
| Displays the spa or ambient temperature | |
| A hand-held self-contained wood box using an Arduino which displays Altitude, Temperature, Humidity, and Heading. | |
| A 64x32 pixel 3-color LED matrix using an Arduino Mega to drive the display and a Picaxe to receive remote sensor and time data | |
| A 320x240 pixel color TfT display uses a Teensy and a Picaxe to show and store remote and local sensor data | |
| This uses a cheap clock which is actually driven by a DS3231 | |
| A 24-Alpha-Numeric LED clock in a wood box mounted on pillars from a solid walnut base.. | |
| I took a very old Nixie clock off the shelf and reworked it with a PICAXE | A big LED clock made from junk |
| A unique clock in a preserve jar which is controlled solely by tilting. | |
| A bedside clock in a cigar box with big OLED characters which is turned on momentarily by pressing to top. | |
| A clock in an custom carved hardwood box which is turned on by lifting its lid. | |
| A clock with a graphics color display in a hardwood box | |
| A small clock in a nice oak box | |
| A battery-operated clock in a small wood box | |
| A meter to measure voltages and currents, display them, transmit them, and show on an arc of neopixels | |
| An OLED I2C Clock | |
| An interface for a sensor for Carbon Dioxide, Methane and LPG gas. It displays and transmits messages of its measurements. | |
| A replacement using a 14M2 for a 19-year-old discrete IC wire-wrap board | |
| A thermostatically-controlled Exhaust Fan. | |
| A 2.2 AH 2-cell Li-Ion battery and stepped charger with load compensation | |
| A Solar Charging System | |
| A decorative display in a tall bottle | |
| A LED strip activated by radar used as a nightlight. | |
| A LED house number display activated by Radar which switches to "Hello" when approached. | |
| Weather Data is read on a dial and on an OLED Display | |
| 5, 2.1 AH 5-cell NIMH batteries in series with picaxe control using themisters and a charger. | |
| A standalone AC wattmeter measures true watts from 20 to 2000 full-scale. it also measures and displays current and line voltage, and accumulated watt-hours | |
| A decorative display with flashing rgb lights | |
| This is a set of illuminated ornaments with various kinds of LEDs. They are controlled remotely by several of the transmitters in the RF Control section. | |
| This consists of a full-color cylindrical lamp and matched control communicating via 433 MHz transmissions. | |
| This is a battery-powered microwave motion sensor using doppler radar technology. It has its own indicators and relay plus control and information 433 MHz transmissions. | |
| This has a 433 MHz receiver which converts received messages to formatted Bluetooth transmissions. | |
| A logger with an opto-isolated current input, analog meter, and SD Writer. | |
| A mobile logger using an Arduino | |
| A battery-powered, RF receiver which receives all my messages, displays them, and logs them to a SD module. | |
| A 2-input voltmeter with serial output | |
| A comprehensive system for continuously displaying and recording security events and environmental measurements. | |
| A transmitting Analog/Digital data acquisition system | |
| A mobile environmental logger using an 18M2 | |
| Picaxe 08M/M2 | Picaxe 14M/M2 | Picaxe 18-20X/M2/X2 | Picaxe 28X1 | Stamp II | Ardurino | No micro |