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Onju Voice - AI assistant replacement to Google Nest Mini by @justLV
kv4p HT v1.7b
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Desktop Neon Effect LED Signs
Tad Boy Color
DIY Mechanical Macro Keypad ― Ocreeb
SIDKick pico 0.2 DAC (SID 6581/8580-replacement for C64/C128)
SlimeVR Hyperion BMI160 PCB
Sputnik Regenerative Receiver - SSB, CW, AM, FM
MicroDexed-Touch (depreciated)
Frog Boy Color
Low Cost Drone using ESP32
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Onju Voice - AI assistant replacement to Google Nest Mini by @justLV
kv4p HT v1.7b
SIDKick pico 0.2 (SID 6581/8580-replacement for C64/C128)
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I recently restored a Grundig Satellit 2100, which turned out really well, and which can be viewed on my YouTube Channel, Electronics Old and New. I mentioned then that I’d think about building an ext...
External BFO V2.0 through-hole version
2039
0
0
Manuel Caldeira
Manuel Caldeira
PORTUGAL
216
3
A tester designed to test leakage in capacitors that also serves to reform electrolytic caps. High voltages are involved.
EO&N CAPACITOR LEAKAGE TESTER
10308
2
18
Manuel Caldeira
Manuel Caldeira
PORTUGAL
216
3
This is based on Alex Jensen project (https://www.cron.dk/poor-mans-bash-bunny/) and on Hak5 Bash Bunny i've created a PCB to allocate all components and atach to a Rasperry Pi W. This works like the ...
Bash Bunny DIY
749
0
1
Tiago Santos
Tiago Santos
PORTUGAL
3
5
The definitive Bluetooth Module PCB to seamlessly add BT to a tube radio, with no buzzing noise, and signal booster.The board takes power from the radio's heater supply, and provides power to a commer...
Tube Radio Bluetooth Module boards
671
2
2
Manuel Caldeira
Manuel Caldeira
PORTUGAL
216
3
Temperature, humidity and light sensors using ESP8266, with ESPeasy code, to send to Home Automation (HTTP, MQTT, others) the measures. This use 100-240VAC 50-60Hz and a transformer enclosure from TME...
ESP Room SmartMonitor V3
794
0
0
Julio Santos
Julio Santos
PORTUGAL
1
0
The BH OnOfre is a Wi-Fi Switch Open Source and Open Hardware, check all on website www.bhonofre.pt
OnOfre Switch Shield
1550
0
0
Bruno Horta
Bruno Horta
PORTUGAL
36
7
This Waziup_Weather Station PCB (v1.0) is a board to aid the assembly of the WAZIUP LoRa Weather Station using low-cost hardware that can communicate using LoRa network.This work was done in the conte...
Waziup_Weather_Station_PCB_1v0
2317
0
3
bruno.almeida
bruno.almeida
PORTUGAL
5
0
Magic Eye Switch for Bluetooth BoardsThis is an add-on to allow the Bluetooth Boards that I designed previously to be switched on or off using the magic Eye tube's B+ signal. The Magic Eye is normally...
Magic Eye Switch for Bluetooth Boards
281
0
2
Manuel Caldeira
Manuel Caldeira
PORTUGAL
216
3
An RF demodulator probe is a valuable tool for repairing radios and other RF gear. Equally, an audio signal tracer is great for repairing audio gear. What if we could have both functions in one tester...
A high impedance active RF/AF probe with amplifier.
6117
0
16
Manuel Caldeira
Manuel Caldeira
PORTUGAL
216
3
A simple op-amp tester that allows you to test single, dual and quad op-amps, using a single dual-colour LED to indicate condition. For more instructions, see the videos on my Youtube channel, Electro...
EO&N Op-Amp tester
2083
2
4
Manuel Caldeira
Manuel Caldeira
PORTUGAL
216
3
While testing the different oscilloscopes and multimeteres reviewed on the channel www.youtube.com/TechCornerTV, I found the need to have a stable and common source of low voltage for a more precise c...
mv Voltage Reference Board
1384
0
1
Hugo Ferreira
Hugo Ferreira
PORTUGAL
0
0
A set of 3 gears for the Sony crf-320 and crf-330 receivers, which are a common source of problems, as the originals tend to crack.
Sony CRF-320 replacement gear set
591
2
1
Manuel Caldeira
Manuel Caldeira
PORTUGAL
216
3
I recently converted the dial lamps on a Sony CRF-320 receiver to LED's, and the effect was wonderful. The dial lamps were very dim, and finding suitable replacements is becoming difficult. LEDs also ...
Dial lamp to LED conversion boards
580
0
2
Manuel Caldeira
Manuel Caldeira
PORTUGAL
216
3
An SMD version of a JFET Booster/Buffer that fits inside the guitar body, creating active pickups and an interesting tonal effect. Some claim that it gives the signal a tube-like quality at the f...
PCB_Fetzer Valve smd_2023-10-09
594
0
0
Manuel Caldeira
Manuel Caldeira
PORTUGAL
216
3
A Through-hole Buffer / Booster using a single JFET, that fits inside the guitar to provide active pickups, with interesting tonal effects. Some claim that it gives the guitar a tube-like sound at the...
PCB_Fetzer Valve_2023-09-03
686
0
1
Manuel Caldeira
Manuel Caldeira
PORTUGAL
216
3
A simple but useful pcb to make a small variable power supply using the LM317 i.c. with connections for a three-terminal LCB voltmeter module.
Variable LM317 low voltage DC power supply
1132
0
3
Manuel Caldeira
Manuel Caldeira
PORTUGAL
216
3
1
2
3
4
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