DIY Goodies

“HAMputer” PC for ham operators

I’ve got excited about the idea of ​​creating a small computer to help radio amateurs work with SDRs and digital modes.

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Heart of HAMputer is Raspberry Pi 3

https://aliexpress.ru/item/32900816535.html?spm=a2g0o.productlist.0.0.2dad133bP2WdKj&algo_pvid=6c2d553a-7527-4f3f-80e6-ac00a62c9e40&algo_expid=6c2d553a-7527-4f3f-80e6-ac00a62c9e40-2&btsid=1f38d34a-5e40-4b6f-8cec-cdc31d41aafe&ws_ab_test=searchweb0_0,searchweb201602_6,searchweb201603_53

And 5 inch LCD display. With resistive touch sensor.

https://aliexpress.ru/item/32993813607.html?spm=a2g0s.9042311.0.0.4b5b33edmdtSZS

The video is transmitted via HDMI so the speed is sufficient to watch the receiver’s SDR waterfall.

The case is cut and assembled from PVC sheet.

It is important to leave a gap between the caseand the screen so as not to able to create pressure from the case on the touch sensor, this may result in incorrect cursor values.

3D case model

Case templates

HAMputer

Article about how to connect display

https://www.jeffgeerling.com/blog/2016/review-elecrow-hdmi-5-800×480-tft-display-xpt2046-touch-controller

Examples of working with the SDR dongle.

It should be in mind that the quality of sound of the SDR on raspberrie depends on CPU temperature. The fan and the directing air jacket solve this problem

WEBsdr listening from a browser