Shared Projects by tomcircuit

Shared Projects by tomcircuit

My Projects

RTC7301 Refit

2 layer board of 0.40 x 0.90 inches (10.2 x 22.9 mm)
Uploaded: January 19th 2020
Shared: October 18th 2021
Total Price: $1.80

Small board to replace Epson RTG7301DG with Maxim DS3232M. Unused pins 16,17 were used for SDA and VBat, and pin 1 is now SCL.

Small board to replace Epson RTG7301DG with Maxim DS3232M. Unused pins 16,17 were used for SDA and VBat, and pin 1 is now SCL.

Embeddable link to order this shared Project

HP28S_battery.kicad_pcb

2 layer board of 1.03 x 0.48 inches (26.1 x 12.1 mm)
Uploaded: September 29th 2021
Shared: October 18th 2021
Total Price: $2.40

LiPo charger for use inside an HP 28S calculator as part of a LiPo battery upgrade. Project details and support files can be found at the Hackaday project pa…

LiPo charger for use inside an HP 28S calculator as part of a LiPo battery upgrade. Project details and support files can be found at the Hackaday project pa…

Embeddable link to order this shared Project

MAX7128_JTAG_Tester.kicad_pcb

2 layer board of 3.00 x 2.30 inches (76.2 x 58.5 mm)
Uploaded: January 23rd 2020
Shared: February 6th 2020
Total Price: $34.55

3M Textool ZIF PLCC84 socket for easily checking/flashing EPM7128S and EPM7160S CPLD devices. (Many from eBay have JTAG disabled - this is to test them witho…

3M Textool ZIF PLCC84 socket for easily checking/flashing EPM7128S and EPM7160S CPLD devices. (Many from eBay have JTAG disabled - this is to test them witho…

Embeddable link to order this shared Project

HP5328 OCXO Upgrade

2 layer board of 2.51 x 2.51 inches (63.8 x 63.8 mm)
Uploaded: April 19th 2015
Shared: June 13th 2015
Total Price: $31.50

Supports the common 8663HS OCXO, and provides precision 10 MHz reference for an HP5328 frequency counter.

<https://hackaday.io/project/6278-hp5328-counter…

Supports the common 8663HS OCXO, and provides precision 10 MHz reference for an HP5328 frequency counter.

<https://hackaday.io/project/6278-hp5328-counter…

Embeddable link to order this shared Project

HD6309 SBC

2 layer board of 6.31 x 3.95 inches (160.3 x 100.2 mm)
Uploaded: December 31st 2013
Shared: April 8th 2014
Total Price: $124.50

HD6309 single board computer. Files at github under tomcircuit. Also at hackaday projects under user tomcircuit.

HD6309 single board computer. Files at github under tomcircuit. Also at hackaday projects under user tomcircuit.

Embeddable link to order this shared Project