projects http://www.mbowyer.net/Mikes_Corner/dutch.html The clock, which connects to any analogue oscilloscope (in X-Y mode) using regular 10x probes, produces a clock face and current time display shown here. A Menu Mode and an RS232 interface allow the user to set the time, date, and or other options. The time and date is retained with a RTC and battery when power is removed. The finished PCB. The circuit uses a ATmega168 microcontroller, and a TLC7528 DAC. There is also a PCF8563 real time clock with battery. http://www.mbowyer.net/Mikes_Corner/dutch.html#0 3dc34702-30ee-49b1-b012-b04c2dc2b384 http://www.mbowyer.net/Mikes_Corner/dutch_files/Media/dpcb.jpg?derivative=thumb http://www.mbowyer.net/Mikes_Corner/dutch_files/Media/dpcb.jpg?derivative=micro <div style="padding: 0px; " class="image_cluster_layout_style_default_External_0_0"><div class="image_cluster_layout_style_default"><p style="padding-top: 0pt; " class="Caption">The finished PCB. <br/></p><p style="padding-bottom: 0pt; " class="Caption">The circuit uses a ATmega168 microcontroller, and a TLC7528 DAC. There is also a PCF8563 real time clock with battery.</p></div></div> And this is the clock face. 
There are several display options (selected in Menu Mode), such as analog only, or showing fewer numerals. http://www.mbowyer.net/Mikes_Corner/dutch.html#1 26d311a7-3da4-4acd-8ca6-13d05c5f1dc7 http://www.mbowyer.net/Mikes_Corner/dutch_files/Media/dface.jpg?derivative=thumb http://www.mbowyer.net/Mikes_Corner/dutch_files/Media/dface.jpg?derivative=micro <div style="padding: 0px; " class="image_cluster_layout_style_default_External_0_0"><div class="image_cluster_layout_style_default"><p style="padding-bottom: 0pt; padding-top: 0pt; " class="Caption">And this is the clock face. <br/>There are several display options (selected in Menu Mode), such as analog only, or showing fewer numerals.</p></div></div> A short push of S1 will enter the Menu Mode were you can even make the clock run backwards. The option being updated/selected is flashing. Move to the next option by a long push. http://www.mbowyer.net/Mikes_Corner/dutch.html#2 0ee4409a-cf93-4b41-9137-072076559017 http://www.mbowyer.net/Mikes_Corner/dutch_files/Media/dmen.jpg?derivative=thumb http://www.mbowyer.net/Mikes_Corner/dutch_files/Media/dmen.jpg?derivative=micro <div style="padding: 0px; " class="image_cluster_layout_style_default_External_0_0"><div class="image_cluster_layout_style_default"><p style="padding-bottom: 0pt; padding-top: 0pt; " class="Caption">A short push of S1 will enter the Menu Mode were you can even make the clock run backwards. The option being updated/selected is flashing. Move to the next option by a long push.</p></div></div> Screen session set to 19200,8,n,1 - If the connection is good, the AVR clock will display a sign-on message when it starts. Commands are prefixed with "X" , "XH" will display help. http://www.mbowyer.net/Mikes_Corner/dutch.html#3 86bae449-048d-4717-88cd-c9090ee4a9fa http://www.mbowyer.net/Mikes_Corner/dutch_files/Media/dterm.jpg?derivative=thumb http://www.mbowyer.net/Mikes_Corner/dutch_files/Media/dterm.jpg?derivative=micro <div style="padding: 0px; " class="image_cluster_layout_style_default_External_0_0"><div class="image_cluster_layout_style_default"><p style="padding-bottom: 0pt; padding-top: 0pt; " class="Caption">Screen session set to 19200,8,n,1 - If the connection is good, the AVR clock will display a sign-on message when it starts. Commands are prefixed with "X" , "XH" will display help.</p></div></div> A nice display produced with X10 probes. 1X probes (or BNC cables) are not recommended since their capacitance loads the signal down to the point at which the retrace vectors are visible. http://www.mbowyer.net/Mikes_Corner/dutch.html#4 e318cbe0-d7b0-4c37-8933-7462b46f43ae http://www.mbowyer.net/Mikes_Corner/dutch_files/Media/dxy.jpg?derivative=thumb http://www.mbowyer.net/Mikes_Corner/dutch_files/Media/dxy.jpg?derivative=micro <div style="padding: 0px; " class="image_cluster_layout_style_default_External_0_0"><div class="image_cluster_layout_style_default"><p style="padding-bottom: 0pt; padding-top: 0pt; " class="Caption">A nice display produced with X10 probes. 1X probes (or BNC cables) are not recommended since their capacitance loads the signal down to the point at which the retrace vectors are visible.</p></div></div> Most scopes define CH1 and the X axis and CH2 as the Y axis. Some, for example the Tektronix 485, reverse this convention. As a result, you will need to swap the probes. http://www.mbowyer.net/Mikes_Corner/dutch.html#5 9adffd1c-aa07-4cc9-9323-a606b5fe7234 http://www.mbowyer.net/Mikes_Corner/dutch_files/Media/dyx.jpg?derivative=thumb http://www.mbowyer.net/Mikes_Corner/dutch_files/Media/dyx.jpg?derivative=micro <div style="padding: 0px; " class="image_cluster_layout_style_default_External_0_0"><div class="image_cluster_layout_style_default"><p style="padding-bottom: 0pt; padding-top: 0pt; " class="Caption">Most scopes define CH1 and the X axis and CH2 as the Y axis. Some, for example the Tektronix 485, reverse this convention. As a result, you will need to swap the probes.</p></div></div>